Improvement in sawing-machines



0. W. BROCK.

Sawing-Machines.

Patented April I5, 1873.

UNITED STATES PATENT OFFICE.

ORLANDO W. BROOK, OF ETNA, OHIO.

IMPROVEMENT In eAwiNe-MAcHmEs.

Specification forming part of Letters Patent No. 137,758, dated April15, 1873; application filed March 3, 1873.

' similar class, together with such parts thereof as are claimed as newand are desired to be secured by Letters Patent of the United States.

My invention relates to that class of mechanism which is made use of forworking saws, and the nature thereof consists incertain improvements inthe details of the construction of the same, as Ahereinafter shown anddescribed.

In the accompanying drawing, which illustrates my invention and forms apart of the specification thereof, Figure 1 is a lateral elevation ofthe machine. Fig. 2 is a lateral elevation of the side opposite to thatshown in Fig. l.

The construction and operation of my mechanism are as follows: The saw Ais secured to the horizontal bar B, which is pivoted to the hanging barsO O. The bar O is hinged to the'rear of the frame D, and connected, by

means of the connectin g-rod E, to the balance `wheel F. The bar O ispivoted to one end of the upper horizontal bars H, which are hinged tothe frame D. The said bars H are provided with a recess, h, for thereception of such a sized weight as may be required to cause the saw tocut properly. The machine is worked by the lever K, pivoted to theupright rod L, secured by means of a screw-nut to the spring M, in sucha manner as to be vertically adjustable. The said lever is connected bymeans of the pivoted straps N N to the cross-bar O, which is secured tothe rocking-bar P. The said rocking-bar is connected by means of thepost R and connecting-rod S with the gearwheel T, which engages with lapinion upon the balance-wheel F.`

Having described my invention, I claiml. The combination of saw-bars C,C', B, and H, connecting-rod E, and balance-wheel F, all operatingtogether, as described.

2. The combination of lever K, rod L, straps N N, cross-bar O,rocking-bar P, post R, connecting-rod S, and gear T, as and for thepurposes described.

In testimony that I claim the foregoing, I l

have hereunto set my hand this 11th day of December, 1872.

ORLANDO W. BROOK. Witnesses:

SAMUEL E. HAGY, ABRAHAM FAST.

